Fluid dynamics

May 15, 2008 - 11:49am

A St. Louis-area maintenance facility is finalizing flight-test data required to support a Sabreliner 65 reduced vertical separation minimum (RVSM) compliance package. Avmats of Chesterfield, Mo., expects to receive group certification in October for Sabre 65s. The RVSM package includes replacement of the jet’s Collins ADC-80K air-data computer with new dual Collins ADC-87A air-data computers.

May 8, 2008 - 9:21am

Last month NASA made the first flight of an experimental “wing warping” Boeing F/A-18 flying testbed. In 1903 the Wright Brothers used wires connected to their control column to twist the wings of their Flyer, changing the airfoils’ shape to provide differential lift to control bank. NASA calls the 21st century version of wing warping the “active aeroelastic wing,” or AAW.

May 7, 2008 - 10:03am

Turbine-engine technology development is going in two directions. One is the development of new technology to push the envelope of performance, operational safety, maintainability and reliability. The other is to refine and update existing engines for long-term use, especially in light of more stringent Stage 4 requirements and existing Stage 3 rules.

April 29, 2008 - 6:17am

Aero Toy Store has been appointed the factory authorized representative of Aerion for the sale of the company’s supersonic business jet. The agreement allows the initial sale of 12 of the new jets, which will cruise at speeds up to Mach 1.6 at altitudes of up to 51,000 feet. It has a range of 4,000 nm.

February 20, 2008 - 3:34am

Pratt & Whitney insists its geared turbofan (GTF) engine will have “fuel burn parity” with the competing open-rotor designs being studied by CFM International, Rolls-Royce and Snecma, all of whom have rejected geared fans as the way forward.

February 17, 2008 - 11:14pm

Sikorsky Aircraft has selected Eaton Corp. (Stand No. P39) to design and manufacture the primary hydraulic power generation system for the U.S. Marine Corp’s new heavy-lift CH-53K helicopter.

During the development phase of the program, which runs through 2014, Eaton will provide the systems and components for five to 10 shipsets, in addition to a number of test sets. The Marines expect to buy more than 156 CH-53Ks.

February 11, 2008 - 12:00pm

The efficiency of the gas turbine engines that power today’s commercial and military aircraft is approaching the highest level possible with current turbofans. But a totally new technology being pioneered by GE Aviation and researchers worldwide promises far simpler, more efficient engines that will extend aircraft range, cut fuel costs and reduce emissions.

February 5, 2008 - 9:41am

France-based engine manufacturer Snecma has reported “positive results” for the first 35 ground test hours of its Silvercrest core engine. In an unusual move, the company has begun the test program without announcing a launch application for the new turbofan, which is targeted for applications on future super-midsize to large business jets. The core engine achieved “all the expected performance objectives” for these combustion trials.

February 5, 2008 - 9:41am

France-based engine manufacturer Snecma has reported “positive results” for the first 35 ground test hours of its Silvercrest core engine. In an unusual move, the company has begun the test program without announcing a launch application for the new turbofan, which is targeted for applications on future super-midsize to large business jets. The core engine achieved “all the expected performance objectives” for these combustion trials.

January 8, 2008 - 5:56am

Boeing 737s, including the derivative BBJ, have been hit by another emergency AD affecting the twinjet’s fuel pumps. The latest directive (AD 2002-24-51) results from overheating pumps and requires affected aircraft to continue to carry the same minimum fuel quantities as required by the September 30 emergency AD dealing with chafed pump wiring.

 
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